Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details)

v3.5.0.2
Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Operating activities:          
Net income (loss) $ 45,928 $ (477,568) $ (265,503) $ (993,112)  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 51,500 97,329 172,726 326,138  
Ceiling test write-down of oil and natural gas properties 57,912 441,688 279,063 954,850 $ 987,200
Gain on exchange of debt (123,960)   (123,960)    
Debt issuance costs write-off/amortization of debt items     2,135 2,862  
Share-based compensation 2,521 2,605 7,642 8,313  
Derivative (gain) loss 412 (10,231) 2,861 (9,153)  
Cash receipts on derivative settlements     4,746 2,139  
Deferred income taxes     15,484 (166,258)  
Changes in operating assets and liabilities:          
Oil and natural gas receivables     294 23,287  
Joint interest and other receivables     4,281 1,210  
Income taxes     (52,392) (289)  
Prepaid expenses and other assets     (16,128) 16,692  
Asset retirement obligation settlements     (56,167) (25,515)  
Accounts payable, accrued liabilities and other     15,750 (6,371)  
Net cash provided by (used in) operating activities     (9,168) 134,793  
Investing activities:          
Investment in oil and natural gas properties and equipment     (24,062) (192,811)  
Changes in operating assets and liabilities associated with investing activities     (37,400) (65,463)  
Proceeds from sales of assets     1,500    
Purchases of furniture, fixtures and other     (96) (1,185)  
Net cash used in investing activities     (60,058) (259,459)  
Financing activities:          
Borrowings of long-term debt - revolving bank credit facility     340,000 263,000  
Repayments of long-term debt - revolving bank credit facility     (340,000) (445,000)  
Debt exchange/issuance costs     (17,920) (6,591)  
Other     83 54  
Net cash provided by financing activities     57,163 108,463  
Decrease in cash and cash equivalents     (12,063) (16,203)  
Cash and cash equivalents, beginning of period     85,414 23,666 23,666
Cash and cash equivalents, end of period 73,351 7,463 73,351 7,463 85,414
Parent Company          
Operating activities:          
Net income (loss) 49,898 (477,568) (117,914) (993,112)  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 21,959 50,960 65,230 180,334  
Ceiling test write-down of oil and natural gas properties 28,305 244,952 28,305 616,947  
Gain on exchange of debt (123,960)   (123,960)    
Debt issuance costs write-off/amortization of debt items     2,135 2,862  
Share-based compensation     7,642 8,313  
Derivative (gain) loss 412 (10,231) 2,861 (9,153)  
Cash receipts on derivative settlements     4,746 2,139  
Deferred income taxes     17,962 (50,743)  
Loss of affiliates 16,925 129,061 130,719 248,613  
Changes in operating assets and liabilities:          
Oil and natural gas receivables     4,335 26,022  
Joint interest and other receivables     4,281 1,210  
Income taxes     (52,392) 33,002  
Prepaid expenses and other assets     (14,535) (47,057)  
Asset retirement obligation settlements     (37,925) (22,901)  
Accounts payable, accrued liabilities and other     23,584 (57,851)  
Net cash provided by (used in) operating activities     (54,926) (61,375)  
Investing activities:          
Investment in oil and natural gas properties and equipment     (17,473) (29,930)  
Changes in operating assets and liabilities associated with investing activities     2,269 (30,731)  
Proceeds from sales of assets     1,000    
Investment in subsidiary       (1,445)  
Purchases of furniture, fixtures and other     (96) (1,185)  
Net cash used in investing activities     (14,300) (63,291)  
Financing activities:          
Borrowings of long-term debt - revolving bank credit facility     340,000 263,000  
Repayments of long-term debt - revolving bank credit facility     (340,000) (445,000)  
Debt exchange/issuance costs     (17,920) (6,591)  
Other     83 54  
Net cash provided by financing activities     57,163 108,463  
Decrease in cash and cash equivalents     (12,063) (16,203)  
Cash and cash equivalents, beginning of period     85,414 23,666 23,666
Cash and cash equivalents, end of period 73,351 7,463 73,351 7,463 $ 85,414
Guarantor Subsidiaries          
Operating activities:          
Net income (loss) (16,925) (129,061) (130,719) (248,613)  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 29,861 46,369 99,956 145,804  
Ceiling test write-down of oil and natural gas properties 25,317 196,736 110,709 337,903  
Deferred income taxes     (2,478) (115,515)  
Changes in operating assets and liabilities:          
Oil and natural gas receivables     (4,041) (2,735)  
Income taxes       (33,291)  
Prepaid expenses and other assets     (46,758) 114,888  
Asset retirement obligation settlements     (18,242) (2,614)  
Accounts payable, accrued liabilities and other     37,331 341  
Net cash provided by (used in) operating activities     45,758 196,168  
Investing activities:          
Investment in oil and natural gas properties and equipment     (6,589) (162,881)  
Changes in operating assets and liabilities associated with investing activities     (39,669) (34,732)  
Proceeds from sales of assets     500    
Net cash used in investing activities     (45,758) (197,613)  
Financing activities:          
Investment from parent       1,445  
Net cash provided by financing activities       1,445  
11.00% 1.5 Lien Term Loan, Due November 2019          
Financing activities:          
Issuance of Term Loan     75,000    
11.00% 1.5 Lien Term Loan, Due November 2019 | Parent Company          
Financing activities:          
Issuance of Term Loan     75,000    
9.00 % Second Lien Term Loan, Due May 2020          
Financing activities:          
Issuance of Term Loan     297,000  
9.00 % Second Lien Term Loan, Due May 2020 | Parent Company          
Financing activities:          
Issuance of Term Loan       297,000  
Eliminations          
Operating activities:          
Net income (loss) 12,955 129,061 (16,870) 248,613  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion (320)   7,540    
Ceiling test write-down of oil and natural gas properties 4,290   140,049    
Loss of affiliates $ (16,925) $ (129,061) (130,719) (248,613)  
Changes in operating assets and liabilities:          
Prepaid expenses and other assets     45,165 (51,139)  
Accounts payable, accrued liabilities and other     $ (45,165) 51,139  
Investing activities:          
Investment in subsidiary       1,445  
Net cash used in investing activities       1,445  
Financing activities:          
Investment from parent       (1,445)  
Net cash provided by financing activities       $ (1,445)